abstax.biz

Valid Email Server
Domain Lookup › abstax.biz

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
abstax.biz
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 13:01:44 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • abstax-biz.mail.protection.outlook.com

MX Priorities

  • abstax-biz.mail.protection.outlook.com: 0

A / AAAA Records

  • 44.226.107.251 ↩ ec2-44-226-107-251.us-west-2.compute.amazonaws.com

Mail Server IPs

  • 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
  • 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
  • 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
  • 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
  • 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.cpasitesolutions.com systems.cpasitesolutions.com 2025020706 3600 7200 1209600 86400
Primary NS (mname)
ns1.cpasitesolutions.com
Admin Email (rname)
systems@cpasitesolutions.com
Serial
2025020706
Refresh
3600s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns1.cpasitesolutions.com
ns2.cpasitesolutions.com
ns9.cpasitesolutions.com

SPF Record

✓ Soft Fail (~all)
v=spf1 +a +mx +ip4:54.70.20.164 +ip4:44.226.107.251 +ip4:8.19.178.105 +ip4:8.19.178.105 +include:cpa-email.com +include:spf.protection.outlook.com +include:_spf.taxprowebsites.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 +a +mx +ip4:54.70.20.164 +ip4:44.226.107.251 +ip4:8.19.178.105 +ip4:8.19.178.105 +include:cpa-email.com +include:spf.protection.outlook.com +include:_spf.taxprowebsites.com ~all
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for abstax.biz

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits